Public bug reported:
SRU Justification:
[Impact]
Currently, the driver uses fixed offsets for the control and data registers in
the performance counter module. However, this is not correct since the module
is not uniform in all HW blocks, and in this case, the llt_miss block is
different from the rest.
[Fix]
The number of counters present in each block is not fixed, and hence the
offsets for the control and data registers should also be calculated
accordingly.
[Test Case]
Without the fix, writing 1 to the llt_miss "enable" file will not result in any
of the counters incrementing. With the fix, the counters should increment even
with the default event settings.
[Regression Potential]
Can be considered minimal.
** Affects: linux-bluefield (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2004235
Title:
mlxbf-pmc counters not functional for llt_miss block
Status in linux-bluefield package in Ubuntu:
New
Bug description:
SRU Justification:
[Impact]
Currently, the driver uses fixed offsets for the control and data registers
in the performance counter module. However, this is not correct since the
module is not uniform in all HW blocks, and in this case, the llt_miss block is
different from the rest.
[Fix]
The number of counters present in each block is not fixed, and hence the
offsets for the control and data registers should also be calculated
accordingly.
[Test Case]
Without the fix, writing 1 to the llt_miss "enable" file will not result in
any of the counters incrementing. With the fix, the counters should increment
even with the default event settings.
[Regression Potential]
Can be considered minimal.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/2004235/+subscriptions
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